Effects of split applications of nitrogen fertilizers on the Cd level and nutritional quality of Chinese cabbage

Cadmium (Cd) contamination in soil is an increasingly serious problem. Management of plant nutrients has been proposed as a potentially promising strategy for minimizing Cd accumulation in crops grown in contaminated soil. This study investigated the effects of split applications of nitrogen (N) fer...

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Bibliographic Details
Published in:Journal of Zhejiang University. B. Science 2017-10, Vol.18 (10), p.897-905
Main Authors: Fan, Shi-kai, Zhu, Jun, Tian, Wen-hao, Guan, Mei-yan, Fang, Xian-zhi, Jin, Chong-wei
Format: Article
Language:English
Subjects:
Agricultural pollution
Ammonium
Antioxidants
Biomass
Biomedical and Life Sciences
Biomedicine
Brassica
Brassica - chemistry
Brassica oleracea
Cadmium
Cadmium - analysis
Chinese cabbage
Contamination
Cultivation
Fertilizers
Nitrogen
Nitrogen - pharmacology
Nutrients
Nutritive Value
Sediment pollution
Soil contamination
Soil investigations
Soil Pollutants - analysis
Soil pollution
Soils
Urea
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Summary:Cadmium (Cd) contamination in soil is an increasingly serious problem. Management of plant nutrients has been proposed as a potentially promising strategy for minimizing Cd accumulation in crops grown in contaminated soil. This study investigated the effects of split applications of nitrogen (N) fertilizers on the Cd concentration in Chinese cabbage ( Brassica chinensis L.) plants grown in Cd-contaminated soil. Compared with single applications, split applications of ammonium or urea resulted in significantly lower Cd concentrations, and higher biomass production and antioxidant-associated nutritional quality in the edible plant parts. However, when nitrate was used as the N fertilizer, there were no significant differences between the split and single applications for the same parameters. We conclude that a split application could be more beneficial than a single application method when ammonium or urea is used as the N fertilizer for vegetable cultivation in Cd-contaminated soil.
ISSN:1673-1581
1862-1783
DOI:10.1631/jzus.B1600272